Leentje Fransman was a daughter of Isaac Fransman and Saartje Cartoef. She married in Amsterdam on 5 September 1900 to Hartog van Collem, a son of David van Collem and Rachel Olivier.
Her sister Elsje, who was unmarried, lived also in the family of Hartog van Collem and Leentje Fransman.
City Archive of Amsterdam, archive cards of Hartog van Collem, Elsje Fransman and website www.wiewaswie.nl.